MysteryTwister C3
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Level II Challenges (158)

Page 31 of the challenges in Level II, ordered by date posted (the most recent appear first).

Alice's Birthday Party (Part 2)

[kitrub-02] - 272 users already solved this challenge, 2 are working on it.
 
 
 

Alice has learned from her mistake from last year. This year, she makes sure that the friends to whom she sends invitations for her birthday party all use unique RSA N parameters. However, this time she still makes another mistake that allows an adversary, Eve, to reconstruct the message.

Can you again decrypt this year's invitation? The codeword for this challenge is the location of Alice's party.
Read more...

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Author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published on: 2010-10-14 13:30
Maximum number of attempts for this challenge: 20

All successful users of this challenge

Rank User (#272) Achieved points (Global score) y-m-d - h:m:s

Nobody (nobody) 2000 (42945) 2010-10-14 13:31:45
kyprizel (kyprizel) 1725 (20795) 2010-10-16 20:00:25
Nabb (Nabb) 1725 (13803) 2010-10-16 23:25:58
Cezary Glowacz (cezaryglowacz) 1725 (9995) 2010-10-16 23:53:15
#5 Martin Wittiger (wittiger) 1725 (3450) 2010-10-17 01:48:28
#6 Simon Jakob (simon.jakob) 1613 (18714) 2010-10-18 19:43:09
#7 Ralf Stephan (rwst) 1613 (25229) 2010-10-19 09:52:51
#8 Thomas Schmucker (dg) 1576 (26066) 2010-10-19 18:27:11
#9 Ulrich Dürholz (Uli) 1576 (1576) 2010-10-20 01:09:49
#10 Michał Bartoszkiewicz (embe) 1576 (3269) 2010-10-20 02:24:25
#11 Dennis Nolte (JokerX) 1502 (6377) 2010-10-22 17:01:26
#12 Roadrunner (rr) 1502 (12702) 2010-10-22 22:33:10
#13 Claude Laveaux (claude.laveaux) 1469 (14504) 2010-10-24 14:26:31
#14 Armin Krauss (argh) 1433 (206965) 2010-10-27 22:59:10
#15 Christian (Etschupu) 1406 (31788) 2010-10-30 17:02:30
#16 mischa (mmisc) 1406 (22426) 2010-10-30 18:25:49
#17 Juan (kation) 1398 (6113) 2010-11-01 01:27:03
#18 piler (piler) 1385 (2818) 2010-11-03 02:47:11
#19 David (aki321) 1378 (27482) 2010-11-03 14:48:25
#20 Stefan Kühne (subROUTINE) 1353 (3595) 2010-11-09 10:58:39
#21 Ilya Ozerov (ilya) 1327 (20556) 2010-11-15 22:29:28
#22 Ulrich Armbrüster (uarmbruester) 1321 (7987) 2010-11-17 17:48:48
#23 chris (iceace) 1268 (2536) 2010-12-14 22:40:35
#24 Sabrina W. (sabrina) 1266 (2532) 2010-12-15 23:42:07
#25 S. N. (Tig3r) 1252 (2504) 2010-12-27 21:55:31
#26 Thomas Gonda (TomG) 1244 (36291) 2011-01-05 18:16:42
#27 Markus H. (maxxh) 1237 (3728) 2011-01-13 19:09:13
#28 Erik Rusek (Rusk) 1234 (3717) 2011-01-17 20:02:34
#29 Wolfgang Weisser (wowmyst) 1229 (33108) 2011-01-25 03:04:37
#30 Fabian Bendun (benfa) 1210 (8697) 2011-02-27 22:22:19
#31 Alan Dixon (NickBourbaki) 1209 (7761) 2011-03-02 22:14:07
#32 RashmiSheetal (rashmisheetal) 1205 (2411) 2011-03-10 20:16:23
#33 Gayathri (gaayaathrees) 1205 (1205) 2011-03-11 04:37:47
#34 Sandhya (sandy_crypto) 1205 (1205) 2011-03-11 04:48:13
#35 J. M. (jomandi) 1180 (113270) 2011-06-02 18:56:34
#36 Daniel Fretwell (fretty) 1176 (30107) 2011-06-20 15:29:19
#37 Seth Kintigh (DarkFibre) 1170 (79471) 2011-07-21 07:27:13
#38 Peter Mustermann (Gummiboot) 1169 (60285) 2011-07-23 15:03:41
#39 Viktor (Veselovský) 1168 (169444) 2011-07-31 00:03:42
#40 Dano (Dano) 1167 (14610) 2011-08-09 10:51:39
#41 Nicolas Golubovic (qll) 1165 (14919) 2011-08-20 21:15:06
#42 dbuq (dbuq) 1165 (22762) 2011-08-21 12:45:42
#43 The Killer (Killer) 1165 (42393) 2011-08-22 00:17:46
#44 h3po (h3po) 1164 (20433) 2011-08-22 20:19:21
#45 Cleyton Muto (accepted_rush) 1164 (5578) 2011-08-25 00:16:13
#46 Flip (Flip) 1164 (31107) 2011-08-28 18:52:33
#47 Robbt Neid (Das Tupel) 1163 (9403) 2011-09-02 20:34:54
#48 Roland Jansen (roland) 1160 (17607) 2011-09-20 14:51:14
#49 Anton Wendel (MoD) 1159 (5679) 2011-09-30 12:53:31
#50 Thomas Lambert (lambert) 1158 (38594) 2011-10-08 12:02:03
#51 Bart den Hartog (Bart13) 1153 (148936) 2011-11-16 02:55:44
#52 Keith Randall (randall77) 1151 (31011) 2011-12-07 00:16:13
#53 Nathan (Witten) 1151 (25326) 2011-12-11 20:36:33
#54 Flo Geht_dich gar_nichts_an (flo) 1150 (6271) 2011-12-14 16:12:36
#55 Jan Temme (JaT3) 1150 (11694) 2011-12-22 17:33:19
#56 John (johnstosh) 1146 (4448) 2012-02-03 02:40:22
#57 Michel Van Caneghem (vancan) 1145 (49719) 2012-02-12 11:52:32
#58 Martin Härterich (HaeM) 1145 (15149) 2012-02-13 17:18:44
#59 Hans Peter (hanspeter) 1144 (52356) 2012-02-19 01:21:30
#60 Luigi Tomelli (archstanton) 1144 (127538) 2012-02-20 10:55:10
#61 Lukas (Kahla) 1143 (4719) 2012-02-29 15:14:20
#62 mallika (perepamallika) 1142 (2284) 2012-03-16 23:34:17
#63 snigdha (snigdha) 1142 (2284) 2012-03-23 06:59:43
#64 Kurt Gebauer (Yokozuna) 1141 (282608) 2012-03-27 01:52:17
#65 Steluta P. (maty_star) 1140 (5734) 2012-04-14 02:15:16
#66 Aliazer (Aliazer) 1139 (12521) 2012-04-26 22:20:07
#67 Daniel Demmler (dd23) 1139 (8942) 2012-04-29 14:50:24
#68 Moi (MSTinaFlow) 1139 (2979) 2012-05-03 19:24:24
#69 captp (bdcht) 1138 (5864) 2012-05-10 22:46:54
#70 Dusan (xxdradus) 1138 (40436) 2012-05-19 07:00:59
#71 George (Theofanidis) 1137 (123216) 2012-05-31 00:24:07
#72 chris_3stones (3stones) 1136 (38845) 2012-06-10 12:41:05
#73 zuben c3 (zuben-c3) 1135 (27154) 2012-06-27 13:37:01
#74 Em Doulgerakis (Greko) 1134 (193799) 2012-07-12 10:53:05
#75 Stepan (m1sterx) 1131 (19165) 2012-09-06 08:45:44
#76 RPH (derichard) 1130 (27044) 2012-09-16 12:40:14
#77 vas (pet) 1130 (8197) 2012-09-23 21:01:29
#78 Hank (hanky) 1130 (24373) 2012-09-25 21:55:59
#79 Hannes (Hartmann) 1130 (8680) 2012-09-25 22:47:33
#80 scout (Scout) 1129 (2368) 2012-10-12 04:55:08
#81 E.T (Ertheb) 1128 (81809) 2012-10-25 20:53:33
#82 Lakshmi Ananthagopal (lakshmi87) 1128 (2256) 2012-11-04 06:27:34
#83 The Enigma (enigma) 1128 (14336) 2012-11-09 20:53:42
#84 Eugene (ZhekaS) 1128 (6037) 2012-11-11 02:00:41
#85 Friedrich Wiemer (asante) 1127 (5183) 2012-11-16 16:50:37
#86 Tron (Tron) 1126 (7381) 2012-12-22 16:48:01
#87 Julia Werdelmann (jw) 1126 (10407) 2012-12-23 00:09:33
#88 zahir mohsen moradi (ariobarzan) 1124 (99757) 2013-02-03 22:47:19
#89 mk (bilbobeutlin) 1122 (12340) 2013-03-19 20:31:23
#90 Velko Nikolov (staafl) 1121 (13467) 2013-04-11 23:21:51
#91 Almut (problelmo) 1121 (45992) 2013-04-27 08:03:33
#92 Philipp Hammer-Pohlau (phase2) 1118 (17981) 2013-07-22 11:22:49
#93 masam (jimboo) 1117 (18687) 2013-08-17 01:43:14
#94 Forrest Gump (Polyphem) 1117 (38763) 2013-08-27 16:06:20
#95 Felix (Flix) 1117 (13812) 2013-08-27 18:16:41
#96 Steve (Samacian) 1116 (23915) 2013-09-05 06:14:13
#97 Gergely Simon (george314) 1116 (17850) 2013-09-27 20:49:54
#98 Alexander (cruachan) 1116 (16051) 2013-09-28 19:48:46
#99 Snake (snk) 1115 (187783) 2013-10-07 16:13:00
#100 Boris (Kaasu) 1115 (16566) 2013-10-18 18:57:48
#101 Swathi Pai (swathi3184) 1115 (3354) 2013-11-01 19:33:40
#102 Usha Narra (usha.narra) 1115 (2230) 2013-11-01 20:28:21
#103 Steve (pairate) 1115 (2230) 2013-11-03 22:40:52
#104 Fengjiao (Fengjiao) 1115 (2230) 2013-11-07 19:05:09
#105 Brad (braddrew) 1114 (15878) 2013-12-09 10:34:55
#106 Lucas (veered) 1113 (2226) 2013-12-28 10:58:36
#107 Alain (Integral) 1113 (207924) 2013-12-28 16:27:05
#108 jonathan (munz) 1113 (8954) 2013-12-30 22:54:06
#109 Csaba Fitzl (csaby) 1113 (6696) 2014-01-01 19:34:29
#110 Pavel (haw) 1113 (22728) 2014-01-12 19:31:51
#111 Michael Doucha (mdou) 1112 (13757) 2014-02-17 18:10:12
#112 Duy Khanh Dau (khanh45a3kct) 1111 (5783) 2014-03-11 00:06:26
#113 hellman (hellman) 1111 (14862) 2014-03-12 16:23:00
#114 caesar ([caesar]) 1111 (10738) 2014-03-23 22:53:52
#115 Karl Schutt (günter) 1111 (44374) 2014-03-30 17:34:31
#116 Igor (idipaolo) 1109 (10639) 2014-05-23 02:39:18
#117 Michael (pheenyx) 1109 (3840) 2014-05-23 21:51:34
#118 Francisco Moraes (fmoraes) 1109 (90044) 2014-07-05 05:29:35
#119 Manfred Wurm (Tschabobo) 1108 (8935) 2014-07-14 10:32:36
#120 julius gaius (julius) 1108 (25581) 2014-07-21 09:01:13
#121 Peter (51dc30ddc) 1108 (10916) 2014-07-23 23:05:35
#122 Robert (rm) 1108 (56475) 2014-07-31 22:18:25
#123 baz (oneiron) 1108 (12353) 2014-08-05 03:12:20
#124 Christof B. (beans90) 1108 (9488) 2014-08-16 17:11:46
#125 Alex (toincogni) 1107 (5055) 2014-09-22 22:34:36
#126 manodivya kathiravan (manodivya) 1106 (2212) 2014-10-28 18:58:46
#127 Samyuktha Tina (samyusridhar) 1106 (2218) 2014-11-07 20:08:56
#128 P (newgirl21) 1106 (2212) 2014-11-08 06:37:36
#129 Javantea (Javantea) 1106 (40816) 2014-11-11 03:42:46
#130 Julia Bernotat (El Greco ) 1106 (81129) 2014-11-26 01:00:48
#131 AnirudhAnand (lucif3r) 1105 (5445) 2015-01-09 09:17:23
#132 Kai Ludwig (TalentRaspel) 1105 (15704) 2015-01-10 16:19:05
#133 Claude Vaillancourt (Cl3v3r) 1104 (44129) 2015-01-20 15:56:55
#134 Shoukat (e195633) 1104 (10617) 2015-01-31 01:09:08
#135 Danny Higgins (hamster147) 1104 (39638) 2015-02-15 16:16:23
#136 Konstantin Golovan (SoulShaker) 1104 (14091) 2015-03-01 17:10:34
#137 R (r?) 1103 (6742) 2015-03-19 10:16:46
#138 Jeremy Chuang (jeremhh) 1103 (6643) 2015-03-19 13:32:28
#139 Rainer Zufall (kiekuk) 1103 (56786) 2015-04-01 10:15:15
#140 Brian Kieslich (briank) 1103 (6733) 2015-04-14 03:57:06
#141 S (Dingo_the_BB) 1103 (6534) 2015-04-15 21:20:18
#142 D (devilchn) 1102 (11142) 2015-06-14 21:45:04
#143 Erik (Erox) 1101 (26141) 2015-07-15 22:19:48
#144 J-L Morel (Rossignol) 1101 (42130) 2015-07-29 14:06:20
#145 Sean (Kavanaugh) 1101 (29143) 2015-08-13 20:08:19
#146 Kokx (kokx) 1101 (4810) 2015-09-07 13:56:44
#147 Ylona (Sirene) 1101 (4425) 2015-09-07 14:26:48
#148 Joerg G. (SnifferMaster) 1100 (18376) 2015-10-04 17:52:25
#149 Alain Collignon (vexilla72) 1100 (123666) 2015-10-08 11:07:52
#150 S Combes (jerva) 1100 (242717) 2015-10-24 20:29:53
#151 Martin (martinbucher) 1100 (38365) 2015-11-09 15:27:42
#152 Szabó Zoltán (szabo.z87) 1100 (55604) 2015-11-10 07:29:42
#153 Rainer (Rainer74) 1099 (8417) 2015-12-21 19:06:00
#154 Dominik M. (Sgt. Pepper) 1099 (128575) 2015-12-22 02:54:08
#155 T (Wagner) 1099 (16988) 2015-12-26 15:58:02
#156 Casaubon (cfreuden) 1099 (8515) 2016-01-13 15:28:13
#157 Vilius (wi_lius) 1098 (3497) 2016-02-14 12:53:46
#158 Andreas Frerichs (Ossili) 1098 (33266) 2016-02-17 19:11:02
#159 Ader (Vert) 1098 (2496) 2016-02-29 17:07:12
#160 Marco Manfredi (mkk9901) 1098 (17686) 2016-03-14 14:25:51
#161 Peter (Garnet) 1098 (14234) 2016-03-16 13:59:33
#162 Norbert Biermann (Norbert) 1096 (47790) 2016-07-05 22:32:23
#163 Ho Chung Siu (soarerz) 1096 (5314) 2016-07-06 07:02:56
#164 Vlatiha Romanova (Vlatiha) 1096 (10323) 2016-08-03 13:59:43
#165 CESH (cesh) 1096 (4995) 2016-08-18 20:13:56
#166 Wieland (wisch) 1096 (8019) 2016-08-20 12:18:42
#167 Flo (sealth) 1096 (25734) 2016-08-22 03:11:19
#168 Nicolas (nicosPavlov) 1095 (257791) 2016-09-29 17:17:52
#169 ender (endered) 1095 (5478) 2016-11-20 03:30:43
#170 neko (neko) 1095 (7679) 2016-11-20 03:38:47
#171 JoGo (JoGo) 1095 (11686) 2016-12-02 17:05:15
#172 Marcel (bene1512) 1094 (20896) 2017-01-07 19:02:11
#173 Michael (FoM) 1094 (57794) 2017-01-25 02:09:41
#174 Georgius Stolte (HazmatsFear) 1094 (16071) 2017-02-08 18:57:20
#175 Tristan1473 (Tristan1473) 1094 (20432) 2017-02-10 13:00:22
#176 Hans Joachim Girulat (joregi) 1094 (36278) 2017-02-25 19:40:49
#177 Mir Dim (mir0soft) 1093 (79760) 2017-03-12 14:37:52
#178 chris (c2) 1093 (51973) 2017-03-14 10:30:52
#179 Vaidotas (Hurrislt) 1093 (3579) 2017-03-21 15:49:11
#180 Daniel Walder (ibex) 1093 (14672) 2017-04-11 21:45:10
#181 Joel (joelhdzhdz) 1093 (3288) 2017-05-26 02:48:25
#182 john doe (misio) 1093 (7371) 2017-05-30 11:53:18
#183 Kasia (kasia-tutej) 1093 (53366) 2017-05-30 11:57:26
#184 Mihail (plexor) 1093 (16827) 2017-06-03 14:57:16
#185 D3d4lu5 (D3d4lu5) 1092 (363488) 2017-06-12 18:34:06
#186 Imam Uasa (Merricx) 1092 (9188) 2017-06-13 16:11:56
#187 NGUYEN Ngoc Ky (kynguyenngoc) 1092 (4974) 2017-06-18 18:14:11
#188 Akonia (Akonia12) 1092 (12153) 2017-07-16 16:38:47
#189 Moomin (Mushmom) 1092 (7674) 2017-07-19 13:47:03
#190 George Lasry (george4096) 1092 (399565) 2017-08-01 20:21:32
#191 juw (juw) 1092 (4179) 2017-08-11 10:54:58
#192 Immo Weber (MandelToast) 1092 (10362) 2017-08-19 18:15:32
#193 Kim H. S. (tenchijin) 1092 (25468) 2017-08-23 15:28:54
#194 Julian (Lemmynator) 1092 (20822) 2017-09-16 14:40:04
#195 Dmitry Eremin-Solenikov (lumag) 1091 (4482) 2017-10-16 15:40:39
#196 Tom Tox (tox) 1090 (17708) 2018-03-14 12:44:21
#197 Nofre Tete (noffi) 1090 (26507) 2018-03-16 16:53:06
#198 Steve Vaillancourt (stvai2) 1089 (15041) 2018-05-11 02:06:08
#199 Eric (ExAstris) 1089 (54941) 2018-05-17 02:15:07
#200 Silvia Kortmann (mikinsget) 1089 (20341) 2018-05-17 02:28:40
#201 Christophe BORELLY (cb34) 1089 (12358) 2018-06-06 09:16:16
#202 Durward McDonell (durward) 1089 (5265) 2018-06-13 17:56:41
#203 E41514050 (E41514050) 1089 (3870) 2018-07-07 11:30:30
#204 E41514023 (E41514023) 1089 (3967) 2018-07-07 15:00:55
#205 E41514013 (E41514013) 1089 (4167) 2018-07-08 09:57:01
#206 E41514006 (E41514006) 1089 (4957) 2018-07-08 10:09:58
#207 Lane Williams (planetlane) 1089 (34637) 2018-07-13 22:32:14
#208 Random Dude (rnd) 1089 (103645) 2018-08-07 02:01:25
#209 Ranee Oscar (roscar2018) 1088 (2176) 2018-09-06 07:10:46
#210 Steven Yen (styen510) 1088 (1088) 2018-10-09 22:10:15
#211 Manfred Paul (manf) 1088 (14774) 2018-11-14 00:01:22
#212 simone (xseris) 1087 (8632) 2019-02-16 10:59:08
#213 Lia (Lia) 1087 (6855) 2019-03-06 00:43:24
#214 whitecowboy (whitecowboy) 1087 (7446) 2019-03-06 13:11:55
#215 LoneWolf219 (LoneWolf219) 1087 (12795) 2019-03-08 02:48:40
#216 E41614031 (E41614031) 1087 (7526) 2019-03-10 13:11:59
#217 Klaus (kumaus) 1087 (22017) 2019-03-21 12:09:35
#218 Will (nitrow) 1087 (6807) 2019-03-21 15:42:03
#219 ykaridi (ykaridi) 1087 (7035) 2019-03-23 00:58:45
#220 schwuggel1337 (schwuggel1337) 1087 (7716) 2019-03-25 14:08:07
#221 E41614048 (E41614048) 1087 (4063) 2019-03-31 08:12:57
#222 madness (madness) 1087 (71592) 2019-04-03 04:26:19
#223 E41614056 (E41614056) 1087 (4062) 2019-04-08 14:27:57
#224 E41614018 (E41614018) 1087 (6243) 2019-04-10 18:49:44
#225 E41614046 (E41614046) 1087 (3862) 2019-04-11 07:34:14
#226 E41614068 (E41614068) 1087 (3868) 2019-04-11 10:44:06
#227 Marco Cinelli (Snap) 1086 (37769) 2019-05-14 16:17:24
#228 Mike (RogueRamblers) 1086 (75961) 2019-05-27 02:24:37
#229 Christian (MarquisDeSud) 1086 (7848) 2019-05-28 13:38:27
#230 ENOENT (ENOENT) 1086 (13478) 2019-05-31 18:49:17
#231 An Viet Pham (S1lv3r) 1086 (7927) 2019-06-08 13:54:19
#232 Eugene (lim0n) 1086 (178540) 2019-06-20 16:22:44
#233 Soutik Nandy (100tick) 1086 (5651) 2019-07-05 11:09:41
#234 yult (yult) 1086 (12185) 2019-07-11 13:49:44
#235 Gerd Wilts (gerdw) 1086 (50534) 2019-07-12 20:48:23
#236 Stephan (Stephje1978) 1086 (27064) 2019-07-20 18:16:56
#237 ajg (ludimus) 1086 (12114) 2019-07-22 17:48:24
#238 Dr. Peter Uelkes (RandyWaterhouse) 1086 (9990) 2019-08-03 07:02:14
#239 Stefan (Saxophonuser) 1086 (5197) 2019-08-09 21:40:57
#240 Derek Hatton (alfred_noble) 1085 (33998) 2019-11-09 01:39:11
#241 Timm Knape (itmm) 1085 (5847) 2019-11-17 15:25:21
#242 0bliviate (0bliviate) 1085 (8634) 2019-11-21 16:14:21
#243 Magata (fmagata) 1085 (11780) 2020-01-05 20:30:02
#244 owl5 (owl5) 1084 (6045) 2020-02-17 19:25:00
#245 LurkNoi (Lurkrul) 1084 (19595) 2020-02-19 09:53:44
#246 Roman Seefeld (Antares) 1084 (15543) 2020-02-21 11:30:42
#247 Artur Puzio (cytadela8) 1084 (14801) 2020-02-23 21:28:10
#248 pcback (langkhach11112) 1084 (4860) 2020-02-28 18:34:53
#249 KlausG (lösbär) 1084 (11811) 2020-04-04 21:03:37
#250 James T (bubblesort) 1084 (7344) 2020-04-10 16:00:15
#251 deuterium (deuterium) 1084 (2768) 2020-04-16 19:04:15
#252 DS (DS8279) 1083 (29732) 2020-07-01 11:46:00
#253 anomy (anomy) 1083 (3249) 2020-07-30 08:34:55
#254 Polaris (Polaris) 1083 (32963) 2020-08-10 18:51:30
#255 Marat (snowbear) 1083 (2466) 2020-08-22 01:19:10
#256 E41714007 (E41714007) 1083 (7504) 2020-09-16 03:31:03
#257 E41714012 (E41714012) 1083 (5535) 2020-09-16 05:15:57
#258 Costantino (Majakovskij) 1083 (9774) 2020-10-02 10:36:30
#259 E41714036_sp (E41714036_sp) 1083 (2267) 2020-10-14 10:23:26
#260 E41714060 (E41714060) 1083 (3450) 2020-10-20 04:21:27
#261 mystery_to3 (mystery_to3) 1083 (3350) 2020-10-20 04:32:32
#262 E41714028 (E41714028) 1083 (6018) 2020-10-20 07:57:52
#263 E41714008 (E41714008..) 1083 (2367) 2020-10-20 13:37:11
#264 Enigmatic (Enigmatic) 1083 (11604) 2020-10-29 01:54:43
#265 E41614001 (E41614001) 1083 (6130) 2020-11-09 12:06:33
#266 Nicky (Wokini) 1083 (18494) 2020-11-26 22:21:28
#267 amir (V5November) 1082 (13344) 2021-01-07 19:02:22
#268 Jean-Francois (Muskrat) 1082 (19013) 2021-01-09 17:56:50
#269 Alexander W. Janssen (itnomad) 1082 (10782) 2021-02-08 21:25:21
#270 Kamil (Lim4K) 1082 (7681) 2021-02-20 11:17:22
#271 m (umsyt) 1082 (9300) 2021-03-12 02:36:23
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ORYX Stream Cipher Part II

[stamp-02] - 47 users already solved this challenge, 3 are working on it.
 
 
 

The ORYX stream cipher consists of three 32-bit LFSRs X, A, B which are shifted differently depending on some bits in the LFSR X. The key stream is a combination of the highest 8 bits of each of the three LFSRs. It is neither feasible nor necessary to search the whole 96-bit key space, there are more efficient methods!

Hint: Enter the codeword in hex with non-capital letters and a leading zero.
Read more...

Click here to get to the corresponding forum topic to share your opinion.
Click here to download the challenge.
Click here to download the additional file of the challenge.

Author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published on: 2010-10-14 13:30
Maximum number of attempts for this challenge: 20

All successful users of this challenge

Rank User (#47) Achieved points (Global score) y-m-d - h:m:s

Nabb (Nabb) 1660 (13803) 2010-10-18 12:47:49
un known (unknown) 1547 (5466) 2010-10-20 22:49:54
Joachim Protze (joschi) 1523 (4877) 2010-10-21 14:54:25
Armin Krauss (argh) 1353 (206965) 2010-11-08 14:54:26
#5 Thomas Gonda (TomG) 1235 (36291) 2011-01-16 11:55:46
#6 Wolfgang Weisser (wowmyst) 1215 (33108) 2011-02-16 23:30:50
#7 J. M. (jomandi) 1168 (113270) 2011-08-03 19:17:18
#8 Viktor (Veselovský) 1163 (169444) 2011-08-30 02:58:06
#9 Seth Kintigh (DarkFibre) 1163 (79471) 2011-09-04 08:05:16
#10 Flip (Flip) 1161 (31107) 2011-09-14 10:32:16
#11 Jan Temme (JaT3) 1150 (11694) 2011-12-18 20:39:31
#12 Nobody (nobody) 1150 (42945) 2011-12-20 16:04:06
#13 Bart den Hartog (Bart13) 1144 (148936) 2012-02-25 05:40:54
#14 Kurt Gebauer (Yokozuna) 1139 (282608) 2012-04-28 12:41:41
#15 Fabian Hemmer (llan) 1126 (7842) 2012-12-12 21:01:37
#16 Tron (Tron) 1126 (7381) 2012-12-21 23:17:18
#17 Hans Peter (hanspeter) 1125 (52356) 2013-01-20 02:16:27
#18 George (Theofanidis) 1123 (123216) 2013-03-12 00:17:58
#19 sukanya thakur (sthakur) 1122 (2244) 2013-03-22 23:09:29
#20 Luigi Tomelli (archstanton) 1120 (127538) 2013-05-31 12:51:45
#21 zahir mohsen moradi (ariobarzan) 1118 (99757) 2013-07-06 16:58:18
#22 Em Doulgerakis (Greko) 1118 (193799) 2013-07-09 14:44:56
#23 Forrest Gump (Polyphem) 1114 (38763) 2013-11-15 00:49:01
#24 Francisco Moraes (fmoraes) 1114 (90044) 2013-11-27 18:44:56
#25 Alain (Integral) 1113 (207924) 2014-01-19 10:33:36
#26 S Combes (jerva) 1104 (242717) 2015-01-24 13:53:58
#27 Claude Vaillancourt (Cl3v3r) 1104 (44129) 2015-03-02 16:16:57
#28 E.T (Ertheb) 1102 (81809) 2015-06-23 21:07:09
#29 Javantea (Javantea) 1101 (40816) 2015-09-10 20:38:45
#30 Martin Härterich (HaeM) 1100 (15149) 2015-10-04 12:07:10
#31 Sean (Kavanaugh) 1099 (29143) 2015-12-05 23:37:14
#32 Alain Collignon (vexilla72) 1099 (123666) 2015-12-13 10:14:49
#33 Julia Bernotat (El Greco ) 1099 (81129) 2016-01-03 15:54:10
#34 Karl Schutt (günter) 1098 (44374) 2016-03-19 18:49:03
#35 Robert (rm) 1097 (56475) 2016-04-20 15:36:24
#36 Rider (alrider) 1096 (7214) 2016-09-01 22:14:21
#37 Nicolas (nicosPavlov) 1095 (257791) 2016-11-01 13:24:34
#38 Kasia (kasia-tutej) 1092 (53366) 2017-06-22 13:42:41
#39 George Lasry (george4096) 1092 (399565) 2017-06-24 22:45:21
#40 D3d4lu5 (D3d4lu5) 1092 (363488) 2017-06-27 17:20:22
#41 Random Dude (rnd) 1088 (103645) 2018-09-14 01:06:06
#42 Michael (FoM) 1087 (57794) 2019-02-15 18:09:54
#43 Klaus (kumaus) 1087 (22017) 2019-04-12 17:31:41
#44 Eugene (lim0n) 1086 (178540) 2019-08-05 16:00:50
#45 Mike (RogueRamblers) 1085 (75961) 2019-11-08 01:56:10
#46 LurkNoi (Lurkrul) 1084 (19595) 2020-02-13 08:45:22
#47 Gerd Wilts (gerdw) 1084 (50534) 2020-02-22 09:25:34
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Not-so-Secret Message from Malawi — Part I (RSA)

[schaefer-01] - 184 users already solved this challenge, 4 are working on it.
 
 
 

When creating RSA keys, it is important to choose the n and e parameters wisely. This was not done in this example, and thus you should be able to decipher this ciphertext message sent from Malawi. The plaintext gives the codeword, which is related to the photo.
Read more...

Click here to get to the corresponding forum topic to share your opinion.
Click here to download the challenge.
Click here to download the additional file of the challenge.

Author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published on: 2010-10-14 13:30
Maximum number of attempts for this challenge: 50

All successful users of this challenge

Rank User (#184) Achieved points (Global score) y-m-d - h:m:s

das (dasdas) 1725 (1925) 2010-10-17 12:25:10
Thomas Schmucker (dg) 1660 (26066) 2010-10-17 17:38:16
Cezary Glowacz (cezaryglowacz) 1660 (9995) 2010-10-17 21:51:03
kyprizel (kyprizel) 1660 (20795) 2010-10-18 06:51:50
#5 Mathias Herrmann (mazze) 1576 (3302) 2010-10-19 13:45:21
#6 Nobody (nobody) 1576 (42945) 2010-10-19 22:44:55
#7 Simon Jakob (simon.jakob) 1523 (18714) 2010-10-22 02:01:36
#8 Juan (kation) 1385 (6113) 2010-11-02 18:10:15
#9 Sven Ge (Sven-from-de) 1353 (2852) 2010-11-08 23:45:57
#10 mischa (mmisc) 1225 (22426) 2011-01-31 02:36:02
#11 David (aki321) 1216 (27482) 2011-02-14 16:42:56
#12 Armin Krauss (argh) 1206 (206965) 2011-03-08 22:23:48
#13 Wolfgang Weisser (wowmyst) 1201 (33108) 2011-03-21 15:16:08
#14 Ishaan (Ishaan) 1200 (1200) 2011-03-23 02:32:59
#15 Sepp Maier (smai) 1191 (1898) 2011-04-20 10:23:39
#16 Tom Tailor (-=Aloras=-) 1188 (1390) 2011-04-28 19:37:45
#17 Roland Jansen (roland) 1187 (17607) 2011-05-04 18:08:00
#18 J. M. (jomandi) 1179 (113270) 2011-06-05 23:39:35
#19 Peter Mustermann (Gummiboot) 1169 (60285) 2011-07-24 21:20:14
#20 Daniel Fretwell (fretty) 1166 (30107) 2011-08-13 13:08:25
#21 Viktor (Veselovský) 1166 (169444) 2011-08-13 21:18:22
#22 Seth Kintigh (DarkFibre) 1166 (79471) 2011-08-14 06:56:30
#23 Joerg Schneider (jcs) 1166 (1166) 2011-08-15 10:37:44
#24 Nicolas Golubovic (qll) 1165 (14919) 2011-08-17 16:19:08
#25 Flip (Flip) 1165 (31107) 2011-08-18 18:22:10
#26 h3po (h3po) 1165 (20433) 2011-08-21 19:50:53
#27 dbuq (dbuq) 1165 (22762) 2011-08-21 22:22:07
#28 The Killer (Killer) 1159 (42393) 2011-10-02 03:08:22
#29 Dano (Dano) 1159 (14610) 2011-10-03 00:18:20
#30 Thomas Gonda (TomG) 1158 (36291) 2011-10-04 21:49:45
#31 Thomas Lambert (lambert) 1158 (38594) 2011-10-09 13:00:42
#32 Bart den Hartog (Bart13) 1153 (148936) 2011-11-18 02:34:51
#33 Keith Randall (randall77) 1152 (31011) 2011-12-04 07:29:42
#34 Nathan (Witten) 1151 (25326) 2011-12-08 01:36:54
#35 jacobian1729 (jacobian1729) 1147 (5584) 2012-01-22 17:42:34
#36 Michel Van Caneghem (vancan) 1145 (49719) 2012-02-12 16:31:49
#37 Martin Härterich (HaeM) 1145 (15149) 2012-02-16 10:30:03
#38 Luigi Tomelli (archstanton) 1144 (127538) 2012-02-25 10:49:00
#39 Hans Peter (hanspeter) 1141 (52356) 2012-04-03 09:45:52
#40 Kurt Gebauer (Yokozuna) 1141 (282608) 2012-04-03 17:31:35
#41 Aliazer (Aliazer) 1140 (12521) 2012-04-20 21:21:05
#42 Daniel Demmler (dd23) 1139 (8942) 2012-04-29 21:50:23
#43 Dusan (xxdradus) 1137 (40436) 2012-05-23 08:47:23
#44 Alastair Aitchison (tanoshimi) 1136 (1236) 2012-06-12 19:56:33
#45 Daniel Richter (TheHiveMind) 1136 (11450) 2012-06-14 10:18:00
#46 Ralf Stephan (rwst) 1135 (25229) 2012-06-24 17:14:29
#47 Christian (Etschupu) 1134 (31788) 2012-07-13 10:42:43
#48 fergus (fergus) 1131 (1944) 2012-09-04 14:41:44
#49 RPH (derichard) 1130 (27044) 2012-09-16 14:29:16
#50 Hank (hanky) 1130 (24373) 2012-09-29 22:07:19
#51 Mangesh (mangesh) 1129 (1129) 2012-10-14 00:44:26
#52 Santosh (santoshy2k007) 1129 (1129) 2012-10-14 02:15:13
#53 E.T (Ertheb) 1128 (81809) 2012-10-29 18:45:19
#54 The Enigma (enigma) 1128 (14336) 2012-11-12 18:50:52
#55 Claude Laveaux (claude.laveaux) 1125 (14504) 2012-12-30 17:32:06
#56 Em Doulgerakis (Greko) 1125 (193799) 2013-01-11 11:47:58
#57 zahir mohsen moradi (ariobarzan) 1124 (99757) 2013-02-02 21:49:14
#58 Ben (Koerber) 1124 (2642) 2013-02-11 04:05:01
#59 mk (bilbobeutlin) 1121 (12340) 2013-04-08 21:26:09
#60 Velko Nikolov (staafl) 1121 (13467) 2013-04-18 14:07:30
#61 Almut (problelmo) 1120 (45992) 2013-05-07 06:10:50
#62 Gergely Simon (george314) 1119 (17850) 2013-06-28 11:02:43
#63 Philipp Hammer-Pohlau (phase2) 1118 (17981) 2013-07-23 17:19:01
#64 George (Theofanidis) 1117 (123216) 2013-08-07 19:30:30
#65 cyclops (cyclops) 1117 (2549) 2013-08-22 18:14:22
#66 Forrest Gump (Polyphem) 1117 (38763) 2013-08-28 00:33:00
#67 Steve (Samacian) 1116 (23915) 2013-09-09 07:41:52
#68 Alexander (cruachan) 1116 (16051) 2013-09-29 20:17:22
#69 Boris (Kaasu) 1115 (16566) 2013-10-22 09:12:59
#70 Francisco Moraes (fmoraes) 1114 (90044) 2013-11-11 21:46:32
#71 Brad (braddrew) 1114 (15878) 2013-12-09 09:53:17
#72 jonathan (munz) 1113 (8954) 2013-12-31 22:39:25
#73 Alain (Integral) 1113 (207924) 2014-01-06 15:45:55
#74 Pavel (haw) 1113 (22728) 2014-01-16 16:18:02
#75 Michael Doucha (mdou) 1112 (13757) 2014-02-17 20:04:45
#76 Marcel (bene1512) 1112 (20896) 2014-02-19 19:50:12
#77 Kim H. S. (tenchijin) 1112 (25468) 2014-02-21 14:13:26
#78 hellman (hellman) 1111 (14862) 2014-03-12 16:25:21
#79 masam (jimboo) 1111 (18687) 2014-03-30 20:10:00
#80 caesar ([caesar]) 1111 (10738) 2014-04-03 15:28:37
#81 Ben (Paulsen) 1111 (2421) 2014-04-06 02:09:25
#82 Karl Schutt (günter) 1111 (44374) 2014-04-06 22:46:19
#83 Snake (snk) 1109 (187783) 2014-06-18 18:24:10
#84 Peter (51dc30ddc) 1108 (10916) 2014-07-26 23:32:42
#85 julius gaius (julius) 1108 (25581) 2014-07-27 21:13:06
#86 Robert (rm) 1108 (56475) 2014-07-31 23:14:46
#87 Christof B. (beans90) 1108 (9488) 2014-08-12 16:53:23
#88 baz (oneiron) 1108 (12353) 2014-08-13 08:11:33
#89 Charles Bocage (diesal9) 1107 (1107) 2014-09-23 12:28:25
#90 Javantea (Javantea) 1106 (40816) 2014-11-19 02:45:59
#91 Julia Bernotat (El Greco ) 1105 (81129) 2014-11-30 22:51:28
#92 Claude Vaillancourt (Cl3v3r) 1105 (44129) 2015-01-10 19:56:16
#93 Kai Ludwig (TalentRaspel) 1105 (15704) 2015-01-15 19:58:56
#94 Shoukat (e195633) 1104 (10617) 2015-02-08 18:59:13
#95 Danny Higgins (hamster147) 1104 (39638) 2015-02-17 14:11:31
#96 Konstantin Golovan (SoulShaker) 1104 (14091) 2015-03-08 13:25:24
#97 Jeremy Chuang (jeremhh) 1103 (6643) 2015-03-19 14:32:44
#98 R (r?) 1103 (6742) 2015-03-20 22:18:18
#99 Rainer Zufall (kiekuk) 1103 (56786) 2015-04-06 00:12:29
#100 D (devilchn) 1102 (11142) 2015-06-17 15:37:41
#101 Erik (Erox) 1101 (26141) 2015-07-15 23:13:28
#102 J-L Morel (Rossignol) 1101 (42130) 2015-07-29 16:59:53
#103 chris_3stones (3stones) 1101 (38845) 2015-08-06 15:23:52
#104 Sean (Kavanaugh) 1101 (29143) 2015-08-14 22:27:11
#105 Hans Joachim Girulat (joregi) 1100 (36278) 2015-10-23 22:42:46
#106 S Combes (jerva) 1100 (242717) 2015-10-25 09:47:05
#107 Alain Collignon (vexilla72) 1100 (123666) 2015-10-30 16:40:37
#108 Szabó Zoltán (szabo.z87) 1100 (55604) 2015-11-10 10:59:10
#109 Martin (martinbucher) 1100 (38365) 2015-11-14 13:12:06
#110 Dominik M. (Sgt. Pepper) 1099 (128575) 2015-12-22 13:28:15
#111 Casaubon (cfreuden) 1099 (8515) 2016-01-18 14:26:31
#112 Wolfgang (grauerwolf) 1098 (1098) 2016-01-29 07:49:16
#113 John (Block52) 1098 (1098) 2016-02-22 07:11:33
#114 Marco Manfredi (mkk9901) 1098 (17686) 2016-03-14 17:19:30
#115 Peter (Garnet) 1097 (14234) 2016-04-22 16:52:14
#116 Andreas Frerichs (Ossili) 1097 (33266) 2016-04-27 19:15:03
#117 Norbert Biermann (Norbert) 1096 (47790) 2016-07-31 11:23:33
#118 CESH (cesh) 1096 (4995) 2016-08-19 22:52:12
#119 Flo (sealth) 1096 (25734) 2016-08-24 00:50:33
#120 Yeshwanth Bashyam (yeshbash) 1095 (1095) 2016-09-22 00:24:02
#121 Rajat Kabra (rajat kabra) 1095 (1195) 2016-09-22 01:07:19
#122 Nicolas (nicosPavlov) 1095 (257791) 2016-10-01 07:14:22
#123 ender (endered) 1095 (5478) 2016-11-20 06:56:03
#124 neko (neko) 1095 (7679) 2016-11-20 08:53:32
#125 JoGo (JoGo) 1095 (11686) 2016-12-05 13:00:01
#126 zuben c3 (zuben-c3) 1094 (27154) 2017-01-08 13:32:04
#127 Michael (FoM) 1094 (57794) 2017-01-26 08:39:13
#128 Tristan1473 (Tristan1473) 1094 (20432) 2017-02-04 11:43:44
#129 Georgius Stolte (HazmatsFear) 1094 (16071) 2017-02-11 17:02:55
#130 Mir Dim (mir0soft) 1093 (79760) 2017-03-14 13:53:15
#131 chris (c2) 1093 (51973) 2017-03-16 14:52:03
#132 Vaidotas (Hurrislt) 1093 (3579) 2017-03-20 20:29:16
#133 Kasia (kasia-tutej) 1093 (53366) 2017-05-30 13:46:28
#134 Mihail (plexor) 1092 (16827) 2017-06-12 14:38:01
#135 D3d4lu5 (D3d4lu5) 1092 (363488) 2017-06-13 19:45:04
#136 Imam Uasa (Merricx) 1092 (9188) 2017-06-17 23:56:02
#137 Akonia (Akonia12) 1092 (12153) 2017-07-19 20:35:29
#138 George Lasry (george4096) 1092 (399565) 2017-08-12 18:57:14
#139 Immo Weber (MandelToast) 1092 (10362) 2017-08-21 23:24:09
#140 Julian (Lemmynator) 1092 (20822) 2017-09-16 18:13:37
#141 Aijun (geaijun) 1090 (3479) 2018-01-07 11:49:33
#142 Tom Tox (tox) 1090 (17708) 2018-03-13 15:39:05
#143 Nofre Tete (noffi) 1090 (26507) 2018-03-15 00:44:28
#144 Godfrey Norton (Godfrey) 1090 (8162) 2018-03-16 08:15:08
#145 v3ct0r (V3ct0r_) 1090 (1291) 2018-04-05 18:47:38
#146 Eric (ExAstris) 1089 (54941) 2018-05-17 21:56:22
#147 Steve Vaillancourt (stvai2) 1089 (15041) 2018-06-01 03:07:39
#148 Random Dude (rnd) 1089 (103645) 2018-08-07 03:17:12
#149 Manfred Paul (manf) 1088 (14774) 2018-11-14 16:54:36
#150 kilink (kilink) 1087 (8053) 2019-01-22 11:48:26
#151 simone (xseris) 1087 (8632) 2019-02-16 11:28:34
#152 LoneWolf219 (LoneWolf219) 1087 (12795) 2019-03-08 05:49:22
#153 E41614031 (E41614031) 1087 (7526) 2019-03-09 11:59:41
#154 schwuggel1337 (schwuggel1337) 1087 (7716) 2019-03-20 19:24:21
#155 Will (nitrow) 1087 (6807) 2019-03-21 16:01:54
#156 Klaus (kumaus) 1087 (22017) 2019-04-01 14:11:52
#157 Lane Williams (planetlane) 1087 (34637) 2019-04-16 03:07:48
#158 Marco Cinelli (Snap) 1086 (37769) 2019-05-06 14:09:54
#159 Mike (RogueRamblers) 1086 (75961) 2019-05-27 16:43:01
#160 ENOENT (ENOENT) 1086 (13478) 2019-05-31 15:35:57
#161 Eugene (lim0n) 1086 (178540) 2019-06-21 14:02:32
#162 yult (yult) 1086 (12185) 2019-07-12 19:58:05
#163 Gerd Wilts (gerdw) 1086 (50534) 2019-07-13 09:27:00
#164 ajg (ludimus) 1086 (12114) 2019-07-23 10:23:48
#165 Dr. Peter Uelkes (RandyWaterhouse) 1086 (9990) 2019-08-03 07:30:38
#166 Stephan (Stephje1978) 1086 (27064) 2019-08-23 18:51:17
#167 Terence (tec) 1085 (8237) 2019-12-12 07:18:41
#168 Magata (fmagata) 1085 (11780) 2020-01-04 23:44:59
#169 LurkNoi (Lurkrul) 1084 (19595) 2020-02-18 15:37:09
#170 Artur Puzio (cytadela8) 1084 (14801) 2020-02-24 14:23:17
#171 Bernd (Elian) 1084 (3069) 2020-04-11 22:22:53
#172 DS (DS8279) 1083 (29732) 2020-07-01 16:55:23
#173 anomy (anomy) 1083 (3249) 2020-07-30 08:42:02
#174 mglarragan (mglarragan) 1083 (3774) 2020-08-10 12:02:12
#175 Polaris (Polaris) 1083 (32963) 2020-08-13 13:37:40
#176 Vinay (vinay27) 1083 (1083) 2020-09-11 14:39:21
#177 Costantino (Majakovskij) 1083 (9774) 2020-10-04 18:02:19
#178 Enigmatic (Enigmatic) 1083 (11604) 2020-10-29 18:58:16
#179 Nicky (Wokini) 1083 (18494) 2020-11-23 12:02:36
#180 Jean-Francois (Muskrat) 1082 (19013) 2021-01-09 21:07:26
#181 Alexander W. Janssen (itnomad) 1082 (10782) 2021-01-15 16:54:51
#182 amir (V5November) 1082 (13344) 2021-01-24 17:10:21
#183 m (umsyt) 1082 (9300) 2021-03-12 03:03:07
#184 madness (madness) 1082 (71592) 2021-04-17 20:59:23
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Enigma Part 1

[stamp-04] - 127 users already solved this challenge, 19 are working on it.
 
 
 

Decrypt the given ciphertext which is encrypted with the Enigma chiper. The wanted key conists of the configuration of the Enigma. Please give the letters in the key as capital letters.
Read more...

Click here to get to the corresponding forum topic to share your opinion.
Click here to download the challenge.
Click here to download the additional file of the challenge.

Author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published on: 2010-10-14 13:30
Maximum number of attempts for this challenge: 15

All successful users of this challenge

Rank User (#127) Achieved points (Global score) y-m-d - h:m:s

Nobody (nobody) 2000 (42945) 2010-10-14 13:32:17
Joachim Protze (joschi) 1576 (4877) 2010-10-19 17:40:41
Ralf Stephan (rwst) 1523 (25229) 2010-10-22 09:32:28
Thomas Schmucker (dg) 1502 (26066) 2010-10-22 19:47:08
#5 kyprizel (kyprizel) 1469 (20795) 2010-10-25 11:55:07
#6 Roadrunner (rr) 1456 (12702) 2010-10-25 14:08:20
#7 Jascha Koch (yosh) 1433 (2201) 2010-10-27 17:37:44
#8 TURINGBOMBE (TBREAKER) 1433 (10616) 2010-10-28 00:40:18
#9 Siggi Bartz (sbartz) 1423 (2892) 2010-10-28 14:18:22
#10 Nabb (Nabb) 1423 (13803) 2010-10-28 14:50:08
#11 Armin Krauss (argh) 1423 (206965) 2010-10-28 21:54:26
#12 Ulrich Armbrüster (uarmbruester) 1315 (7987) 2010-11-19 22:54:31
#13 Hans Schuell (hschuell) 1312 (2194) 2010-11-20 13:39:51
#14 Sven Ge (Sven-from-de) 1292 (2852) 2010-11-30 02:51:13
#15 Thomas Gonda (TomG) 1275 (36291) 2010-12-10 11:44:40
#16 mischa (mmisc) 1228 (22426) 2011-01-26 02:31:00
#17 David (aki321) 1224 (27482) 2011-02-01 15:09:03
#18 Wolfgang Weisser (wowmyst) 1208 (33108) 2011-03-03 23:50:25
#19 Arshi (arshi) 1201 (1201) 2011-03-21 07:57:07
#20 Darshan (darshonline) 1201 (1201) 2011-03-21 08:05:59
#21 Fabian Hemmer (llan) 1190 (7842) 2011-04-25 00:50:23
#22 David Horvath (horvathd) 1178 (2438) 2011-06-10 14:15:25
#23 J. M. (jomandi) 1178 (113270) 2011-06-10 19:25:15
#24 Martin Bauser (stef_the_chef) 1169 (4329) 2011-07-24 14:08:47
#25 Peter Mustermann (Gummiboot) 1169 (60285) 2011-07-28 23:26:15
#26 Seth Kintigh (DarkFibre) 1168 (79471) 2011-07-31 04:44:36
#27 Daniel Fretwell (fretty) 1166 (30107) 2011-08-13 16:46:31
#28 h3po (h3po) 1164 (20433) 2011-08-24 07:49:29
#29 Viktor (Veselovský) 1163 (169444) 2011-09-01 23:28:34
#30 Nicolas Golubovic (qll) 1162 (14919) 2011-09-07 23:24:41
#31 dbuq (dbuq) 1162 (22762) 2011-09-09 22:01:21
#32 jane_jeakcy (jane_jeakcy) 1157 (1157) 2011-10-14 18:09:26
#33 Bart den Hartog (Bart13) 1151 (148936) 2011-12-12 21:11:56
#34 Michael Gürtler (michaelg) 1144 (4128) 2012-02-18 16:49:39
#35 Hans Peter (hanspeter) 1142 (52356) 2012-03-14 10:58:03
#36 Jais (oliver43) 1141 (1743) 2012-04-04 19:41:56
#37 JBBom (hn51) 1141 (1442) 2012-04-04 19:57:29
#38 Kurt Gebauer (Yokozuna) 1141 (282608) 2012-04-06 17:42:48
#39 Keith Randall (randall77) 1140 (31011) 2012-04-13 18:53:46
#40 Michel Van Caneghem (vancan) 1139 (49719) 2012-04-26 15:34:32
#41 Dusan (xxdradus) 1137 (40436) 2012-06-04 11:19:33
#42 Luigi Tomelli (archstanton) 1136 (127538) 2012-06-08 11:28:03
#43 Thomas Lambert (lambert) 1132 (38594) 2012-08-25 18:07:15
#44 Stepan (m1sterx) 1131 (19165) 2012-08-29 07:17:43
#45 Roland Jansen (roland) 1128 (17607) 2012-10-28 15:11:41
#46 Xiaohan Li (feng7801) 1128 (1128) 2012-11-13 17:17:28
#47 E.T (Ertheb) 1127 (81809) 2012-12-05 21:31:35
#48 Nikki Brandt (nikki) 1123 (2348) 2013-03-12 08:23:22
#49 George (Theofanidis) 1122 (123216) 2013-03-15 14:30:23
#50 RPH (derichard) 1122 (27044) 2013-04-05 00:00:28
#51 Paul Duplys (pd) 1121 (1525) 2013-04-23 22:06:47
#52 Los (Gurt) 1121 (2742) 2013-04-24 20:24:57
#53 Felix (Flix) 1121 (13812) 2013-04-27 19:51:27
#54 Almut (problelmo) 1118 (45992) 2013-07-10 21:08:12
#55 chris_3stones (3stones) 1117 (38845) 2013-08-03 10:49:34
#56 zahir mohsen moradi (ariobarzan) 1117 (99757) 2013-08-27 17:27:36
#57 Hank (hanky) 1116 (24373) 2013-10-03 15:39:08
#58 Forrest Gump (Polyphem) 1115 (38763) 2013-10-05 02:05:16
#59 Em Doulgerakis (Greko) 1115 (193799) 2013-10-08 21:13:20
#60 Steve (Samacian) 1115 (23915) 2013-10-10 03:52:10
#61 Francisco Moraes (fmoraes) 1115 (90044) 2013-11-06 16:47:57
#62 Liang Wu (leonwu) 1115 (1115) 2013-11-07 23:45:22
#63 Michael Möller (michaelm) 1114 (253196) 2013-11-08 16:13:09
#64 Norbert Paefgen (egebamyasi) 1114 (2728) 2013-11-27 20:49:01
#65 Jim Gillogly (Scryer) 1114 (21260) 2013-12-05 04:07:18
#66 George Robinson (osric) 1113 (1413) 2013-12-19 18:52:39
#67 Alain (Integral) 1113 (207924) 2013-12-20 14:51:31
#68 jonathan (munz) 1113 (8954) 2014-01-06 03:41:35
#69 Marcel (bene1512) 1112 (20896) 2014-02-16 18:46:16
#70 Snake (snk) 1108 (187783) 2014-07-16 12:26:14
#71 baz (oneiron) 1108 (12353) 2014-08-08 01:14:32
#72 julius gaius (julius) 1107 (25581) 2014-08-23 21:52:21
#73 Robert (rm) 1107 (56475) 2014-09-19 12:06:45
#74 jej (stationz) 1106 (4939) 2014-11-08 18:08:06
#75 Julia Bernotat (El Greco ) 1106 (81129) 2014-11-18 21:23:24
#76 Pavel (haw) 1105 (22728) 2014-12-05 23:28:25
#77 Kai Ludwig (TalentRaspel) 1105 (15704) 2015-01-18 00:02:39
#78 S Combes (jerva) 1104 (242717) 2015-01-25 20:09:15
#79 Georgius Stolte (HazmatsFear) 1104 (16071) 2015-02-18 19:36:12
#80 Bernhard Gruber (bgr) 1104 (22889) 2015-02-23 19:06:17
#81 Rainer Zufall (kiekuk) 1104 (56786) 2015-02-26 19:01:19
#82 Tien (tn9900) 1104 (1104) 2015-03-14 00:53:10
#83 Hans Joachim Girulat (joregi) 1103 (36278) 2015-04-05 22:13:46
#84 DirkS (Dustman) 1103 (8479) 2015-04-08 13:52:41
#85 Karl Schutt (günter) 1103 (44374) 2015-04-11 11:57:31
#86 KW (qwer*) 1102 (13963) 2015-06-27 10:42:36
#87 Claude Vaillancourt (Cl3v3r) 1100 (44129) 2015-09-25 14:20:36
#88 J-L Morel (Rossignol) 1100 (42130) 2015-10-10 14:36:39
#89 Alain Collignon (vexilla72) 1099 (123666) 2016-01-12 11:30:42
#90 Szabó Zoltán (szabo.z87) 1099 (55604) 2016-01-20 20:19:47
#91 Nofre Tete (noffi) 1099 (26507) 2016-01-22 17:15:40
#92 Andreas Frerichs (Ossili) 1098 (33266) 2016-02-08 20:31:22
#93 Marco Manfredi (mkk9901) 1098 (17686) 2016-03-25 11:05:42
#94 Erik (Erox) 1097 (26141) 2016-04-16 22:12:29
#95 Javantea (Javantea) 1096 (40816) 2016-07-07 21:02:35
#96 Norbert Biermann (Norbert) 1096 (47790) 2016-08-23 18:47:02
#97 Mirko Rendey (Biork) 1095 (6595) 2016-09-20 12:27:36
#98 HeinzelMann (Ohm) 1095 (5295) 2016-09-20 12:28:51
#99 Nicolas (nicosPavlov) 1095 (257791) 2016-10-16 12:52:22
#100 Tristan1473 (Tristan1473) 1094 (20432) 2017-02-19 12:49:32
#101 Mir Dim (mir0soft) 1093 (79760) 2017-03-20 18:40:33
#102 Raksha (Scorpio) 1093 (1093) 2017-03-23 02:40:47
#103 Nishanth Reddy (Nishi549) 1093 (1093) 2017-03-23 02:43:39
#104 Dominik M. (Sgt. Pepper) 1093 (128575) 2017-03-27 02:05:50
#105 chris (c2) 1093 (51973) 2017-03-27 09:16:07
#106 Daniel Walder (ibex) 1093 (14672) 2017-05-03 22:36:07
#107 Kasia (kasia-tutej) 1092 (53366) 2017-06-27 09:28:49
#108 D3d4lu5 (D3d4lu5) 1092 (363488) 2017-07-05 01:06:51
#109 S P (sp314) 1092 (1092) 2017-08-02 02:33:44
#110 Kim H. S. (tenchijin) 1092 (25468) 2017-08-23 18:21:11
#111 Martin (martinbucher) 1091 (38365) 2017-10-29 14:50:57
#112 Julian (Lemmynator) 1089 (20822) 2018-07-27 15:52:15
#113 Random Dude (rnd) 1088 (103645) 2018-08-21 23:12:34
#114 zuben c3 (zuben-c3) 1087 (27154) 2019-01-12 09:32:48
#115 Michael (FoM) 1087 (57794) 2019-01-26 18:04:36
#116 Mike (RogueRamblers) 1087 (75961) 2019-03-16 07:03:20
#117 Robin Welsch (tigohofer) 1085 (3556) 2019-11-03 13:28:29
#118 madness (madness) 1084 (71592) 2020-02-10 02:30:00
#119 Eugene (lim0n) 1084 (178540) 2020-02-28 13:35:48
#120 DS (DS8279) 1083 (29732) 2020-08-04 11:01:51
#121 Polaris (Polaris) 1083 (32963) 2020-09-02 23:53:19
#122 Benjamin Bartl (arenas) 1083 (6347) 2020-09-15 02:06:12
#123 Citizen (citizenflaba) 1083 (1083) 2020-10-07 02:18:24
#124 Flo (sealth) 1083 (25734) 2020-11-15 18:31:47
#125 Derek Hatton (alfred_noble) 1083 (33998) 2020-11-20 03:06:43
#126 Jean-Francois (Muskrat) 1082 (19013) 2021-01-24 21:21:42
#127 Gerd Wilts (gerdw) 1082 (50534) 2021-02-08 22:04:17
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Sigaba Part 1

[stamp-07] - 16 users already solved this challenge, 1 is working on it.
 
 
 

The encryption with the Sigaba machine was the American counterpart to the German Enigma. But due to the much larger key space of the Sigaba, even today, it is only feasible to break the code if parts of the key are known. This is what this challenge is about.
Read more...

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Click here to download the challenge.
Click here to download the additional file of the challenge.

Author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published on: 2010-10-14 13:30
Maximum number of attempts for this challenge: 8

All successful users of this challenge

Rank User (#16) Achieved points (Global score) y-m-d - h:m:s

DirkS (Dustman) 1265 (8479) 2010-12-16 12:47:52
J. M. (jomandi) 1159 (113270) 2011-10-02 19:55:00
Luigi Tomelli (archstanton) 1117 (127538) 2013-08-26 12:14:11
Francisco Moraes (fmoraes) 1113 (90044) 2013-12-21 12:33:37
#5 Alain (Integral) 1112 (207924) 2014-02-27 22:00:07
#6 Kurt Gebauer (Yokozuna) 1109 (282608) 2014-05-27 00:23:06
#7 S Combes (jerva) 1103 (242717) 2015-04-10 11:18:30
#8 Armin Krauss (argh) 1100 (206965) 2015-10-14 13:58:05
#9 zahir mohsen moradi (ariobarzan) 1096 (99757) 2016-07-02 19:47:21
#10 Nicolas (nicosPavlov) 1094 (257791) 2016-12-18 01:40:06
#11 George Lasry (george4096) 1093 (399565) 2017-06-06 23:14:10
#12 D3d4lu5 (D3d4lu5) 1088 (363488) 2018-08-26 13:40:54
#13 Alain Collignon (vexilla72) 1084 (123666) 2020-02-12 18:24:07
#14 Mike (RogueRamblers) 1084 (75961) 2020-06-09 15:59:58
#15 Eugene (lim0n) 1083 (178540) 2020-09-02 21:39:18
#16 Em Doulgerakis (Greko) 1082 (193799) 2021-04-16 18:18:11
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   +++    [20:39 - 21.06.2021] mglarragan solved the Level I challenge 'Enigma Messages with Repeated Letters — Part 4'    +++    [20:28 - 21.06.2021] mglarragan solved the Level I challenge 'Enigma Messages with Repeated Letters — Part 2'    +++    [20:14 - 21.06.2021] mglarragan solved the Level I challenge 'Enigma Messages with Repeated Letters — Part 3'    +++    [01:44 - 21.06.2021] RogueRamblers solved the Level II challenge 'The T52 Sturgeon Challenge — Part 8'    +++    [01:26 - 21.06.2021] RogueRamblers solved the Level II challenge 'The T52 Sturgeon Challenge — Part 12'    +++